The document discusses the differences between the past simple and past continuous tenses in English. The past simple is used to talk about completed past events, while the past continuous describes a situation that was ongoing in the past. Examples are provided of how to form the past simple and past continuous using regular and irregular verbs. Time expressions that are commonly used with each tense are also listed. The document concludes with examples of using the correct tense and practice identifying whether sentences should use the past simple or past continuous.